| HIGHER ORDER THINKING ASSOCIATION LIMITED | Private company limited by shares | Live |
| Owl's Thinking Education Centre Limited | Private company limited by shares | Live |
| Owl's Thinking Resources Limited | Private company limited by shares | Live |
| Parallel Thinking Limited | Private company limited by shares | Live |
| Positive Thinking & Co. Limited | Private company limited by shares | Live |
| POSSIBILITY THINKING 44 LIMITED | Private company limited by shares | Live |
| NEW THINKING PRESS CO., LIMITED | Private company limited by shares | Live |
| THINKING CAPS PRODUCTION CO., LIMITED -THE- | Private company limited by shares | Dissolved |
| Quorum Thinking Limited | Private company limited by shares | Live |
| THINKING REED COMPANY LIMITED | Private company limited by shares | Dissolved |
| THINKING RESOURCES LIMITED | Private company limited by shares | Live |
| Thinking in Reverse Learning Centre Limited | Private company limited by shares | Live |
| RIGHT THINKING LIMITED | Private company limited by shares | Live |
| THINKING RIGHT LIMITED | Private company limited by shares | Live |
| Second Thinking Limited | Private company limited by shares | Live |
| SMART THINKING LIMITED | Private company limited by shares | Live |
| Solution Thinking Limited | | Live |
| Thinking Source (Hong Kong) Capital Company Limited | Private company limited by shares | Live |
| THINKING STARS LIMITED | Private company limited by shares | Live |
| FSN STRATEGIC THINKING LIMITED | Private company limited by shares | Live |
| Super Thinking Limited | Private company limited by shares | Live |
| TALENT THINKING LIMITED | Private company limited by shares | Live Commenced dormancy on 09-May-2016 |
| THINKING TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NEW THINKING TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Creative Thinking Technology Limited | Private company limited by shares | Live |
| THINKING ELECTRONIC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| THINKING MORE ELECTRONIC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| THINKING TOP ELECTRONIC TECHNOLOGY INTERNATIONAL LIMITED | | Live |
| Smart Thinking Technology Limited | Private company limited by shares | Live |
| THIRD THINKING LIMITED | Private company limited by shares | Live |
| THINKING WAY TRADE LIMITED | Private company limited by shares | Live |
| Thinking Trail Limited | Private company limited by shares | Live |
| THINKING WELL LIMITED | Private company limited by shares | Live |
| WISHFUL THINKING LIMITED | Private company limited by shares | Live |
| THINKING WITHOUT THINKING LIMITED | Private company limited by shares | Live |
| WITHOUT THINKING TRADING LIMITED | Private company limited by shares | Live |
| WORLD FEDERATION OF ULTIMATE THINKING LIMITED | Private company limited by shares | Live |
| THINKING-ON TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| Lollipop Thinkings Limited | Private company limited by shares | Live |
| Zhenghe Thinking-Tank Information Consulting Limited | Private company limited by shares | Live |
| THINKIT LIMITED | Private company limited by shares | Dissolved |
| THINKIT SOLUTIONS LIMITED | Private company limited by shares | Live |
| ThinkJoy Limited | | Live |
| THINKLAB LIMITED | Private company limited by shares | Live |
| THINKLAND COMPANY LIMITED | Private company limited by shares | Dissolved |
| Thinklean Limited | Private company limited by shares | Live |
| THINKLEDGE LIMITED | Private company limited by shares | Dissolved |
| THINK-LINE CO. LIMITED | Private company limited by shares | Live |
| ThinkLink International Co., Limited | | Live |
| Thinklnfinity Limited | | Live |
| THINKLO Limited | Private company limited by shares | Live |
| ThinkLouder Limited | Private company limited by shares | Live |
| THINKMAC ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| ThinkMac International (HK) Limited | Private company limited by shares | Live |
| THINKMADE HK LIMITED | Private company limited by shares | Live |
| ThinkMatrix Limited | | Live |
| THINKMAX ENTERPRISE LIMITED | Private company limited by shares | Live |
| THINKMIND PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| Thinkmore Limited | Private company limited by shares | Live |
| Thinkmore F&M Limited | | Live |
| Thinkmore Solutions Limited | | Live |
| Thinkmuse Co., Limited | Private company limited by shares | Live |
| THINKNAO SOFTWARE LIMITED | Private company limited by shares | Live |
| THINKNEXT LIMITED | Private company limited by shares | Dissolved |
| THINKNICE CO., LIMITED | Private company limited by shares | Live |
| THINKNOLIMIT COMPANY LIMITED | Private company limited by shares | Live |
| HK THINKO INFORMATION CO., LIMITED | Private company limited by shares | Live |
| Thinkology Limited | Private company limited by shares | Live |
| THINKOON (INTERNATIONAL) CO., LIMITED | Private company limited by shares | Live |
| THINKPAC INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| THINKPHARMA CO., LIMITED | Private company limited by shares | Live |
| THINKPLAY LIMITED | Private company limited by shares | Live |
| THINKPLUS EXPO LIMITED | Private company limited by shares | Live |
| Thinkplus Expo Group Limited | | Live |
| THINKPORT SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| ThinkPossible International Holdings Limited | Private company limited by shares | Dissolved |
| Thinkpower Capital Co., Limited | Private company limited by shares | Live |
| THINKPOWER PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| THINKPOWER TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| THINKQUEEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| THINKRED HOLDING LIMITED | Private company limited by shares | Live |
| ThinkRetail Limited | Private company limited by shares | Live |
| THINKROCK STONE CO., LIMITED | Private company limited by shares | Live |
| THINKS LIMITED | Private company limited by shares | Live |
| Ho Thinks Sports Association Limited | Private company limited by shares | Live |
| THINKS ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| ThinksArt Limited | Private company limited by shares | Live |
| THINKSCAPE FWP PTE LIMITED | Private company limited by shares | Live |
| THINKSEMI HK CO., LIMITED | Private company limited by shares | Live |
| Thinksideways Limited | Private company limited by shares | Live |
| THINKSMAKER LIMITED | Private company limited by shares | Live |
| ThinkSmall Limited | Private company limited by shares | Live |
| THINKSMART ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| ThinkSmart Marketing Group Limited | | Live |
| THINKSMART TRAINING LIMITED | Private company limited by shares | Live |
| Thinkso Technology (Hong Kong) Limited | Private company limited by shares | Live |
| THINKSPACE FOOD&BEVERAGE MANAGEMENT (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| THINKSTAR CO., LIMITED | Private company limited by shares | Live |
| THINKSTAR ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| THINKSTAR TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |